Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / vfs / ufs / inode.h
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f719c866 1/*-
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2 * Copyright (c) 1982, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)inode.h 8.9 (Berkeley) 5/14/95
39 * $FreeBSD: src/sys/ufs/ufs/inode.h,v 1.28.2.2 2001/09/29 12:52:52 iedowse Exp $
b13267a5 40 * $DragonFly: src/sys/vfs/ufs/inode.h,v 1.12 2006/09/10 01:26:41 dillon Exp $
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41 */
42
43#ifndef _UFS_UFS_INODE_H_
44#define _UFS_UFS_INODE_H_
45
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46#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
47
05220613 48#ifndef _SYS_LOCK_H_
984263bc 49#include <sys/lock.h>
05220613 50#endif
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51#ifndef _SYS_LOCKF_H
52#include <sys/lockf.h>
53#endif
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54
55#endif
56
05220613 57#ifndef _SYS_QUEUE_H_
984263bc 58#include <sys/queue.h>
05220613 59#endif
1f2de5d4 60#include "dinode.h"
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61
62/*
63 * The size of a logical block number.
64 */
65typedef long ufs_lbn_t;
66
67/*
68 * This must agree with the definition in <ufs/ufs/dir.h>.
69 */
70#define doff_t int32_t
71
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72#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
73
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74/*
75 * The inode is used to describe each active (or recently active) file in the
76 * UFS filesystem. It is composed of two types of information. The first part
77 * is the information that is needed only while the file is active (such as
78 * the identity of the file and linkage to speed its lookup). The second part
79 * is the permanent meta-data associated with the file which is read in
80 * from the permanent dinode from long term storage when the file becomes
81 * active, and is put back when the file is no longer being used.
82 */
83struct inode {
3446c007 84 struct inode *i_next;/* Hash chain */
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85 struct vnode *i_vnode;/* Vnode associated with this inode. */
86 struct vnode *i_devvp;/* Vnode for block I/O. */
f719c866 87 uint32_t i_flag; /* flags, see below */
b13267a5 88 cdev_t i_dev; /* Device associated with the inode. */
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89 ino_t i_number; /* The identity of the inode. */
90 int i_effnlink; /* i_nlink when I/O completes */
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91 struct fs *i_fs; /* Associated filesystem */
92 struct ufs_dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
984263bc 93 u_quad_t i_modrev; /* Revision level for NFS lease. */
508ceb09 94 struct lockf i_lockf;/* Head of byte-level lock list. */
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95 /*
96 * Side effects; used during directory lookup.
97 */
98 int32_t i_count; /* Size of free slot in directory. */
99 doff_t i_endoff; /* End of useful stuff in directory. */
100 doff_t i_diroff; /* Offset in dir, where we found last entry. */
101 doff_t i_offset; /* Offset of free space in directory. */
102 ino_t i_ino; /* Inode number of found directory. */
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103 uint32_t i_reclen; /* Size of found directory entry. */
104 uint32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */
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105
106 struct dirhash *i_dirhash; /* Hashing for large directories */
107 /*
50e58362 108 * The on-disk dinode itself (128 bytes)
984263bc 109 */
50e58362 110 struct ufs1_dinode i_din;
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111};
112
113#define i_atime i_din.di_atime
114#define i_atimensec i_din.di_atimensec
115#define i_blocks i_din.di_blocks
116#define i_ctime i_din.di_ctime
117#define i_ctimensec i_din.di_ctimensec
118#define i_db i_din.di_db
119#define i_flags i_din.di_flags
120#define i_gen i_din.di_gen
121#define i_gid i_din.di_gid
122#define i_ib i_din.di_ib
123#define i_mode i_din.di_mode
124#define i_mtime i_din.di_mtime
125#define i_mtimensec i_din.di_mtimensec
126#define i_nlink i_din.di_nlink
127#define i_rdev i_din.di_rdev
128#define i_shortlink i_din.di_shortlink
129#define i_size i_din.di_size
130#define i_uid i_din.di_uid
dc1be39c 131#define i_fsmid i_din.di_fsmid
984263bc 132
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133#endif
134
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135/* These flags are kept in i_flag. */
136#define IN_ACCESS 0x0001 /* Access time update request. */
137#define IN_CHANGE 0x0002 /* Inode change time update request. */
138#define IN_UPDATE 0x0004 /* Modification time update request. */
139#define IN_MODIFIED 0x0008 /* Inode has been modified. */
140#define IN_RENAME 0x0010 /* Inode is being renamed. */
141#define IN_SHLOCK 0x0020 /* File has shared lock. */
142#define IN_EXLOCK 0x0040 /* File has exclusive lock. */
143#define IN_HASHED 0x0080 /* Inode is on hash list */
144#define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */
145
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146#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
147
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148/*
149 * Structure used to pass around logical block paths generated by
150 * ufs_getlbns and used by truncate and bmap code.
151 */
152struct indir {
153 ufs_daddr_t in_lbn; /* Logical block number. */
154 int in_off; /* Offset in buffer. */
155 int in_exists; /* Flag if the block exists. */
156};
157
158/* Convert between inode pointers and vnode pointers. */
159#define VTOI(vp) ((struct inode *)(vp)->v_data)
160#define ITOV(ip) ((ip)->i_vnode)
161
162/* Determine if soft dependencies are being done */
163#define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
164#define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
165
166/* This overlays the fid structure (see mount.h). */
167struct ufid {
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168 uint16_t ufid_len; /* Length of structure. */
169 uint16_t ufid_pad; /* Force 32-bit alignment. */
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170 ino_t ufid_ino; /* File number (ino). */
171 int32_t ufid_gen; /* Generation number. */
172};
ec12abe0 173#endif /* _KERNEL || _KERNEL_STRUCTURES */
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174
175#endif /* !_UFS_UFS_INODE_H_ */